let scan_int () = Scanf.scanf " %d" (fun x -> x) let print_int n = Printf.printf "%d\n" n let scan_array len read_func = Array.init len (fun _ -> read_func()) (* zero-based numbering *) module SegmentTree : sig type 'a st val init : int -> ('a -> 'a -> 'a) -> 'a -> 'a st val set : 'a st -> int -> 'a -> unit val build : 'a st -> unit val update : 'a st -> int -> 'a -> unit val query : 'a st -> int -> int -> 'a val get : 'a st -> int -> 'a end = struct type 'a st = {n: int; func: ('a -> 'a -> 'a); seg: 'a array; id: 'a} let get_n _n = let rec loop n ret = if ret < n then loop n (ret*2) else ret in loop _n 1 let init _n _func _id = let _n = get_n _n in {n = _n; func = _func; seg = Array.make (_n*2) _id; id = _id} let set st i x = st.seg.(st.n+i) <- x let merge st par = st.seg.(par) <- st.func st.seg.(par*2) st.seg.(par*2+1) let build st = let rec loop i = if i = 0 then () else let _ = merge st i in loop (i-1) in loop (st.n-1) let update st i x = let _ = set st i x in let k = i + st.n in let rec loop i = if i = 0 then () else let _ = merge st i in loop (i/2) in loop (k/2) (* query: [a, b) *) let query st a b = let rec loop a b l r = if a >= b then st.func l r else let l = if a land 1 = 0 then l else st.func l st.seg.(a) in let r = if b land 1 = 0 then r else st.func st.seg.(b-1) r in loop ((a + a land 1) / 2) ((b - b land 1) / 2) l r in loop (a+st.n) (b+st.n) st.id st.id let get st i = st.seg.(st.n+i) end let f x (a, list) = if (List.hd list < x) then (a+1, x :: list) else (a, list) let merge (a, a_list) (b, b_list) = List.fold_right f b_list (a, a_list) let () = let n = scan_int() and q = scan_int() in let st = SegmentTree.init n merge (0, [0]) in let _ = for i = 0 to n-1 do let a = scan_int() in SegmentTree.set st i (1, [a]) done in let _ = SegmentTree.build st in for i = 1 to q do let op = scan_int() and l = scan_int() and r = scan_int() in let ans, _ = SegmentTree.query st (l-1) r in print_int ans done